Keratin-Based Substrate for Hydroponics
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Solution Overview
Problem
Current hydroponics substrates face issues such as non-biodegradability, limited porosity, poor water retention, and potential for stagnant water accumulation, leading to plant health problems like chlorosis and death, and they often rely on non-renewable materials that contribute to environmental pollution.
Innovation Solution
A keratin-based substrate is developed by crosslinking keratin derivatives with natural biopolymers like cellulose nanofibers, enhancing mechanical properties and water retention, and incorporating micronutrients and nanoparticles for controlled release, creating a porous and biodegradable support for plant growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If rock wool is used as substrate, then it provides good support structure, but it produces dust particles causing health issues and is non-biodegradable
Solution Approach 1:
The patent changes the material composition from synthetic rock wool to natural biodegradable materials (coconut coir, cotton, hemp, rice straw, wheat straw) while maintaining the support structure function through controlled processing and formulation
Solution Approach 2:
The patent utilizes agricultural waste products (coconut coir, cotton, hemp, rice straw, wheat straw) that would otherwise be discarded, transforming them into valuable hydroponic substrates that are biodegradable and environmentally friendly
2Stability of the object's composition
If sand is used as substrate, then it provides structural stability, but it is heavy and requires additional containers to preserve its shape
Solution Approach 1:
The patent creates composite substrates by combining natural fibers (coconut coir, cotton, hemp, rice straw, wheat straw) with binding agents and hydroponic nutrients, forming a lightweight yet structurally stable material that maintains shape without requiring additional containers
3Stability of the object's composition
If sand is used as substrate, then it provides structural stability, but it only retains water for a short time and needs to be watered frequently
Solution Approach 1:
The patent modifies the physical and chemical parameters of natural fiber substrates by controlling moisture content, adding binding agents, and incorporating hydroponic nutrients, enabling the substrate to retain water for extended periods while maintaining structural stability
Solution Approach 2:
The patent replicates the water retention capabilities of ideal hydroponic substrates using natural fiber materials that have been processed and formulated to achieve similar or superior water holding capacity compared to traditional sand-based systems
4Duration of action of stationary object
If synthetic polymers are used as substrate, then they provide durability, but they are not readily biodegradable resulting in plastic pollution
Solution Approach 1:
The patent changes the material composition from synthetic polymers to natural biodegradable materials (coconut coir, cotton, hemp, rice straw, wheat straw) while maintaining durability through controlled processing, binding agents, and proper formulation to ensure sufficient lifespan for plant growth
Solution Approach 2:
The patent replaces persistent synthetic polymers with natural materials that can be safely discarded and decomposed, utilizing agricultural waste products that return to the environment harmlessly after use, eliminating plastic pollution
5Strength
If solid substrates with limited porosities are used, then they provide structural integrity, but they limit nutrient flow and fluid exchange causing stagnant water accumulation
Solution Approach 1:
The patent employs porous natural fiber substrates (coconut coir, cotton, hemp, rice straw, wheat straw) that inherently possess a three-dimensional porous structure, enabling excellent fluid exchange and nutrient flow while maintaining structural integrity to support plant growth without causing stagnant water accumulation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The keratin-based substrate provides improved porosity, biodegradability, and water retention, supporting healthy plant growth while mitigating pathogen issues and reducing environmental impact through controlled nutrient release and enhanced mechanical stability.
Implementation Method 1
the mechanical properties of the keratin-based substrate may be improved because of their crystalline domains and the potential for physical crosslinks with keratins through hydrogen bonds and electrostatic interactions
Implementation Method 2
the mechanical properties of the keratin-based substrate may be improved because of their crystalline domains and the potential for physical crosslinks with keratins through hydrogen bonds and electrostatic interactions
Implementation Method 3
the incorporation of natural biopolymers could enhance the water retention ability of keratin-based substrates owing to their significant amounts of hydroxyl (—OH) groups
Implementation Method 4
highly porous for gas exchange and water retention
Implementation Method 5
highly porous for gas exchange and water retention
Data Source
AI summary
The present disclosure refers to a keratin-based substrate, comprising a keratin derivative and natural biopolymer, where the keratin derivative and natural biopolymer are crosslinked. The present disclosure also refers to a method of forming a keratin-based substrate, comprising (i) mixing a solution of keratin derivative with a solution of natural biopolymer; and (ii) drying the resulting solution of step (i) to obtain the keratin-based substrate. The present disclosure further relates to the use of the substrate as a plant growth medium or hydroponic support medium. In a preferred embodiment, a substrate comprising keratin intermediate filament protein and cellulose nanofibers is provided.